Oc i7 930 4.2ghz

[leepord geko]

So just finished overclocking today to what I think to be a stable 4.2ghz overclock. Little lazy when it comes to overclocking the new i7's so I went with a asus p6t motherboard best (mobo) I've owned so far.
Okay question time what have people been needing to get to 4.2ghz for vcore, i'm using the X.M.P profile in bios so i disabled all of the spread spektrum...etc crap but only control qpi voltage and vcore really. I have a vcore in bios of 1.35v and qpi of 1.35v as well cpuz is showing 1.364vcore after a little bit of stressing are these normal voltages for this oc? Also I am running this under water obviously and get a temp of 78 degrees on the hottest core (using real temp 3.40) after 15 runs of ibt, what are other people getting? Last but not least do you think adding another radiator such as a 240 swiftech would decrease the temps that much (I have one kicking around)?
Current setup:
Ek Supreme Lt
gtx 470 in the loop as well (overclocked)
mcp655 pump
mcr320 radiator

In essence wondering if these temps/voltages are normal, and if adding that radiator would decrease temps.

[nzaneb]

Those voltages temps are fine. The 470 in the loop is probably where the additional heat is coming from, but it doesn't appear to be bad at all. If you add the extra rad, it should decrease a few degrees, probably not by much though. Putting the 470 on it's own loop would probably get you the best results.